Cascade deleting on Parent-Child Relationships

Cascade deleting on Parent-Child Relationships

I've built my app to be able to hold parent and child relationships.  I want to be able to select the parent record and delete it.  Once I do that, I want all the child records that belong to this parent to be deleted as well.

I was thinking of using a script to delete the child records when before the parent record gets deleted but I'm not sure how I can identify all the child records.

Anyone have ideas how I can do this?

Thanks!